<template>
  <div class="login">
    <el-form ref="loginRef" :model="loginForm" :rules="loginRules" class="login-form">
      <h3 class="title">大学生社团系统登录</h3>

      <el-form-item prop="username">

        <el-input v-model="loginForm.username" type="text" size="large" auto-complete="off" placeholder="账号">
          <template #prefix><svg-icon icon="user" /></template>
        </el-input>
      </el-form-item>
      <el-form-item prop="password">
        <el-input v-model="loginForm.password" type="password" size="large" auto-complete="off" placeholder="密码"
          @keyup.enter="handleLogin">
          <template #prefix><svg-icon icon="password" /></template>
        </el-input>
      </el-form-item>
      <el-form-item style="width:100%;">
        <el-button size="large" type="primary" style="width:100%;" @click.prevent="handleLogin">
          <span>登 录</span>
        </el-button>
      </el-form-item>
      <el-row>
        <el-col :span="12"> <el-checkbox v-model="loginForm.rememberMe"
            style="margin:0px 0px 25px 0px;">记住密码</el-checkbox></el-col>
        <el-col :span="6"></el-col>
        <el-col :span="6"><el-link type="primary" @click="missPassword">忘记密码?</el-link></el-col>
      </el-row>
      <span>没有账号?<el-link type="primary" @click="register">点我注册</el-link></span>
    </el-form>
    <!--  底部  -->
    <div class="el-login-footer">
      <span>Copyright © 2013-2022 <a href="https://blog.csdn.net/m0_51285952?type=blog" target="_blank">chaochao csdn</a>
        版权所有.</span>
    </div>
  </div>
</template>

<script setup>

import { ref } from 'vue'
import Cookies from "js-cookie";
import { encrypt, decrypt } from "@/utils/jsencrypt";
import requestUtil from '@/utils/request'
import { ElMessage } from 'element-plus'
import qs from 'qs'
import store from '@/store'
import router from "@/router";

const codeUrl = ref("");

const loginRef = ref(null);

const loginForm = ref({
  username: "",
  password: "",
  rememberMe: false,
  uuid: ""
});

const loading = ref(true);

/**
 * 变量的声明
 */
const loginRules = {
  username: [{ required: true, trigger: "blur", message: "请输入您的账号" }],
  password: [{ required: true, trigger: "blur", message: "请输入您的密码" }]
};

/**
 * 忘记密码
 */
const missPassword = () => {
  console.log('忘记密码');
}

/**
 * 注册按钮
 */
const register = () => {
  router.replace('/register');
}

/**
 * 登录操作
 */
const handleLogin = () => {

  loginRef.value.validate(async (valid) => {
    if (valid) {
      // 勾选了需要记住密码设置在 cookie 中设置记住用户名和密码
      if (loginForm.value.rememberMe) {
        Cookies.set("username", loginForm.value.username, { expires: 30 });
        Cookies.set("password", encrypt(loginForm.value.password), { expires: 30 });
        Cookies.set("rememberMe", loginForm.value.rememberMe, { expires: 30 });
      } else {
        // 否则移除
        Cookies.remove("username");
        Cookies.remove("password");
        Cookies.remove("rememberMe");
      }

      try {
        let result = await requestUtil.post("login?" + qs.stringify(loginForm.value));
        let data = result.data;
        if (data.code == 200) {
          const token = data.authorization
          const menuList = data.menuList;
          const perms = data.perms;
          const currentUser = data.currentUser;
          console.log("menuList=" + menuList);
          store.commit('SET_TOKEN', token)
          store.commit('SET_MENULIST', menuList);
          store.commit('SET_PERMS', perms);
          store.commit("SET_USERINFO", currentUser);
          router.replace("/")
        } else {
          ElMessage.error(data.msg);
        }
      } catch (err) {
        console.log("error:" + err);
        ElMessage.error("服务器出错，请联系管理员！");
      }
    } else {
      console.log("验证失败")
    }
  })
}


/**
 * 得到cookie用于记住账号和密码
 */
function getCookie() {
  const username = Cookies.get("username");
  const password = Cookies.get("password");
  const rememberMe = Cookies.get("rememberMe");
  loginForm.value = {
    username: username === undefined ? loginForm.value.username : username,
    password: password === undefined ? loginForm.value.password : decrypt(password),
    rememberMe: rememberMe === undefined ? false : Boolean(rememberMe)
  };
}

/**
 * 登录后的路由绑定 将从后台获取的路由添加到路由管理中
 * @param {菜单的参数} menuList 
 */
const bindRoute = (menuList) => {
  console.log(menuList)
  let newRoutes = router.options.routes;
  menuList.forEach(menu => {
    if (menu.children) {
      menu.children.forEach(m => {
        // 菜单转成路由
        let route = menuToRoute(m, menu.name);
        if (route) {
          newRoutes[0].children.push(route); // 添加到路由管理
        }
      })
    }
  })
  // 重新添加到路由
  newRoutes.forEach(route => {
    router.addRoute(route);
  })
}

// 菜单转成路由
const menuToRoute = (menu, parentName) => {

  if (!menu.component) {
    return null
  } else {
    let route = {
      name: menu.name,
      path: menu.path,
      meta: {
        parentName: parentName
      }
    }
    route.component = () => import('@/views/' + menu.component + '.vue')

    return route
  }
}
const menuList = store.getters.GET_MENULIST;
const token = store.getters.GET_TOKEN;
if (token) {
  // 动态绑定路由
  bindRoute(menuList);
}
getCookie();

</script>

<style lang="scss" scoped>
.login {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100%;
  background-image: url("../assets/images/lgbk1.jpg");
  background-size: cover;
}

.title {
  margin: 0px auto 30px auto;
  text-align: center;
  color: #707070;
}

.login-form {
  border-radius: 6px;
  width: 400px;
  background: #ffffff;
  padding: 25px 25px 5px 25px;

  .el-input {
    height: 40px;



    input {
      display: inline-block;
      height: 40px;
    }
  }

  .input-icon {
    height: 39px;
    width: 14px;
    margin-left: 0px;
  }

}

.login-tip {
  font-size: 13px;
  text-align: center;
  color: #bfbfbf;
}

.login-code {
  width: 33%;
  height: 40px;
  float: right;

  img {
    cursor: pointer;
    vertical-align: middle;
  }
}

.el-login-footer {
  height: 40px;
  line-height: 40px;
  position: fixed;
  bottom: 0;
  width: 100%;
  text-align: center;
  color: #fff;
  font-family: Arial;
  font-size: 12px;
  letter-spacing: 1px;
}


.login-code-img {
  height: 40px;
  padding-left: 12px;
}
</style>
